It's been a while since I've installed mine, but if you have the zip file unzipped, look for the folder that says it's for the devices with WM2003 and later. Open it and you should have a choice between Cab files and a windows installer. If you choose the windows installer it should walk you through the install automatically. (Make sure you are docked and syncronized before you start the install.) If you choose the cab file, then you have to drag it over to the sync window and place it there. (I usually put it into the Temp folder if I want to install to main memory) then on your device you have to go to that folder and tap the cab file to get it to install.
This is not the most detailed description, but you should be able to figure it out I hope.
You'll love E-Reader once you get it working, I do.:approve: